WSUS reinstall on 2012 SCCM server post-installation task fails to run/finish

Question

I had to re-install WSUS on a 2012 R2 SCCM server (Windows 2012), and am running into several issues re-installing. It may help to point out that the SCCM SQL server is remote, so this isn't a WSUS / SQL 2012 issue.
The sticky post at the top of the WSUS forum has helpful troubleshooting information, and I have tried going through this as well as many other threads on this very topic of re-installing WSUS.
1. Roles for WSUS and WID were removed successfully. The WSUS Website was manually deleted from IIS. As this is a SCCM server, removing the IIS role is not an option.
2. I removed the existing WID database files for SUSDB
3. After rebooting, I verified registry keys were gone, system files were cleaned up, and deleted the program files\update services directory
4. This isn't a permission issue, as I have clearly installed this before on this server.
5. Registry keys, system files, and susdb files no longer exist, and the server has rebooted cleanly.
6. I am able to add the WSUS role selecting WID, and this installs WID without any errors. At this point, simply clicking the post installation task fails, generates an empty .tmp file in my %appdata%\temp folder, and exits the MMC. 
7. This file is blank. Absolutely empty, so I couldn't really troubleshoot any post installation tasks.
8. Further investigation shows that the 'C:\Program Files\Update Services\Tools\' directory is gone, and isn't being
generated.
9. Ok... DISM /online /Cleanup-Image /Scanhealth didn't return any issues, so I copied the wsusutil out of the windows\WinSxS directory.
10. Yey! wsusutil postinstall runs, but bombs out on the IIS portion. It generated the DB without an issue, but results
in an IIS generation error. So, I installed WSUS on a clean 2012 install, then copied over the program files\updateServices directory to reclaim the missing files. 
The log files show --
2013-12-06 10:30:34  Configuring IIS...
2013-12-06 10:30:35  Start: ConfigureWebsite
2013-12-06 10:30:36  Configuring website on port 8530
2013-12-06 10:30:39  System.ComponentModel.Win32Exception (0x80004005): The system cannot find the file specified
   at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo)
   at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
   at Microsoft.UpdateServices.Administration.UseCustomWebSite.ExecuteIisCustomAction(String arguments)
   at Microsoft.UpdateServices.Administration.UseCustomWebSite.Install(Int32 portNumber)
   at Microsoft.UpdateServices.Administration.UseCustomWebSite.InstallAndConfigure(IisConfiguration& iisConfiguration, Int32 newPortNumber)
   at Microsoft.UpdateServices.Administration.PostInstall.ConfigureWebsite(Int32 portNumber)
   at Microsoft.UpdateServices.Administration.PostInstall.Run()
   at Microsoft.UpdateServices.Administration.PostInstall.Execute(String[] arguments)
... ok - tripple checked that network service has permissions to .net and windows\temp folders.
netstat -a doesn't show anything running on port 8530 ( in case this was some weird port check in use)
Which goes back to the missing directory problem -- further net searches show that this is a reoccurring issue for some OOBE... sfc /verifyonly shows ... nothing.
What is left to be done at this point? The missing folders from the program directory seems to be a problem for some with some users right out of the box. I have read many other threads where users just formatted and started over. Not exactly a solution
- any help out there on this issue? Any suggestions to determine what file is missing, or generating the IIS issues?

Answer 1

Part of the post install tasks wanted to download some items including the tools folder.
Can you expand on this please. The WSUS post-install tasks do not download anything, except what is acquired during the initial synchronization with Microsoft.
Because of my group policy the WSUS server was trying to download the updates from itself even though it was not setup yet.
What update(s) was the WSUS server trying to "download"?
In fact, if the WSUS Server was not setup yet (but you already had a GPO in place), then the first issue here was performing deployment steps out of order.
But still.... except for the actual installation binaries for the WSUS Server Role on a WS2008SP2/WS2008R2 system, there's nothing the WSUS server needs to get from either Windows Update or a WSUS server. This scenario is actually discussed hundreds of times
in this forum, but complicating matters, this thread isn't about installing WSUS V3.2 on a WS2008SP2/WS2008R2 system, it's about installing WSUS v65 on a WS2012 system, so I'm a bit confused as to what the actual installation environment is that we're discussing.
I changed the WSUS server to get it's windows updates from Microsoft and then the post install task succeeded.
I'd really like to get some more details about what exactly in the "post-install task" was dependent upon content from WU/WSUS.
Lawrence Garvin, M.S., MCSA, MCITP:EA, MCDBA
SolarWinds Head Geek
Microsoft MVP - Software Packaging, Deployment & Servicing (2005-2014)
My MVP Profile: http://mvp.microsoft.com/en-us/mvp/Lawrence%20R%20Garvin-32101
http://www.solarwinds.com/gotmicrosoft
The views expressed on this post are mine and do not necessarily reflect the views of SolarWinds.